Could some one maybe tell me if there are any real benefits of using OpenLayers + GEOExt + extjs. as oppose to using only OpenLayers and maybe jquery for client side webgis apps?
Edit: thanks for replying guys. I'm doing my graduation project which will be a web app for finding the best bus route to do a certain trip and route the user to the departure stop from the departure point and from the destination stop to the destination point. There are 3 layers one for the good looking map from osm, one from my roads containing the topology and one from the stops, i'll be using pgrouting and postgres+ postgis for the database.